<!DOCTYPE html>
<html lang="en">

<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>Document</title>
</head>

<body>
  <div id="app">
    <h2>{{fullName}}</h2>
  </div>
  <script src="../js/vue.js"></script>
  <script>
    const app = new Vue({
      el: '#app',
      data: {
        firstName: 'noke',
        lastName: 'Bryqnt'

      },
      computed: {
        // fullName:function(){
        //   return this.firstName+' '+this.lastName
        // }
        //计算属性一般是没用set方法，只读属性
        set: function (newvalue) {
          const names = newvalue.split(' ');
          this.firstName = names[0];
          this.lastName = names[1];
        },

        get: function () {
          return this.firstName + '' + this.lastName

        }
        // fullName: function () {
        //   return this.firstName + '' + this.lastName

        // }
      },
      methods: {},
    })
  </script>
</body>

</html>